Number of (2+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

A250814

Number of (2+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Terms

    a(0) =129a(1) =379a(2) =873a(3) =1731a(4) =3097a(5) =5139a(6) =8049a(7) =12043a(8) =17361a(9) =24267a(10) =33049a(11) =44019a(12) =57513a(13) =73891a(14) =93537a(15) =116859a(16) =144289a(17) =176283a(18) =213321a(19) =255907a(20) =304569a(21) =359859a(22) =422353a(23) =492651a(24) =571377a(25) =659179a(26) =756729a(27) =864723a(28) =983881a(29) =1114947

External references